Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en gum bichromate process300053501bi-gumbi-gum processbichromate, gumgum bichromategum bichromate methodgum bichromate printinggum bichromate printing processgum dichromategum printinggum processgum-bichromategum-bichromate processgum-pigment processprinting, gum A process to make photographic prints using a colloid emulsion of bichromated gum arabic as the binder and pigment as the final image material. The image is formed as the emulsion hardens in relation to exposure and is developed by washing away the unhardened emulsion to reveal the support, forming the highlights and midtones. procés a la goma bicromatada proceso de goma bicromata 2026-03-30 20:50:14